Shaking-screen for thrashing-machines



(No-Model.)

J-. ENGEL. SHAKING SCREEN BOB. THRASHING MACHINES. No. 549,115. Patented Nov. 5, 1895.

AN DIN BARMIAR "(OHM-M10. WASHINGTON 11$.

UNITED STATES PATENT OFFICE.

JACOB ENGEL, OF MEADOWS, ILLINOIS.

SHAKlNG-SCRE EN FOR THRASHlNG-MACHINES.

SPECIFICATION forming part of Letters Patent No. 549,115, dated November 5, 1895.

Application filed April 12, 1895. Serial No. 545,528. (No model.)

To all whom it may concern.-

Be it known that I, JACOB ENGEL, a citizen of the United States, residing at Meadows, in the county of McLean and State of Illinois, have invented a new and useful Shaking- Screen for Thrashing-Machines, of which the following is a specification.

The invention relates to improvements in shaking-screens for thrashing-machines.

The object of the present invention is to improve the construction of shaking-screens for that class of grain-separators employing a fan and to enable the screen to be readily adjusted in order to direct a blast of air upward through it at the proper angle and to accommodate itself to the location of the fan.

'The invention consists in the construction and novel combination and arrangement of parts hereinafter fully described, illustrated in the accompanying drawings, and pointed out in the claims hereto appended.

In the drawings, Figure 1 is a perspective View of a grain-separator screen constructed in accordance with this invention. Fig. 2 is a longitudinal sectional view. Fig. 3 is a transverse sectional view.

' Like numerals of reference indicate corresponding parts in all the figures of the drawings.

1 designates a rectangular screen frame designed to be mounted in any well-known manner, whereby an endwise reciprocating motion will be imparted to the screen, and the frame is composed of sides 2 and ends 3 and has pivotally mounted between the sides 2 a series of inclined transverse slats 4. The slats 4 may be constructed of any suitable material, but are preferably made of sheet metal, and are provided at their upper edges with a longitudinal bead or eye 5, formed by bending the metal on itself. The slats are pivotally or hingedly connected with the frame by transverse rods 6, passing through the eyes 5, and having their ends arranged in perforations or sockets of the sides 2 of the frame. A short distance below the eyes 5 the inclined slats are provided with perforations 7, arranged at intervals and receiving longitudinally-disposed rods 8, co-operating with the upper edges of the slats to form a screen-surface.

The inclined slats depend below the screensurface in the direction of the fan and operate to direct the blast of air upward at the proper angle to prevent the chaff from lying upon the screen, andthe slats are secured at the desired inclination by longitudinally-disposed adjustable bars 9, located at the inner faces of the sides 2 of the frame and arranged on cleats 10, which are secured to the sides 2. The adjustable bars are provided at their upper edges with a series of notches 11, which receive the lower edges of the slats, and which hold the same rigidly at the desired adjustment. By moving the bars 9 along the side bars or longitudinally the inclination of the slats is varied and the bars 9 are secured in their adjustment by bolts 12,

passing through inclined series of perforations 13, and having nuts 14c arranged on the bars 9. By changing the bolts to different perforations the adjustable bars are moved longitudinally and slightly raised or lowered and the position of the slats is correspondingly changed.

It will be seen that the screen is exceedin gly simple and inexpensive in construction, that it is strong and durable, and that the slats may be readily arranged at the desired inclination. It will also be apparent that the depending portions of the slats are adapted in the forward movement of the screen to catch the air and direct the same 'upward through the screen and that the slats may be adjusted to accommodate the screen to the position of the fan.

Changes in the form, proportion, and the minor details of construction may be resorted to without departing from the principle or sacrificing any of the advantages of this invention.

What I claim is 1. A screen, comprisingarectangular frame, a series of transverse slats provided at their upper edges with eyes, and having perforations arranged at intervals and located below the eyes, transverse rods passing through said eyes and hinging the slats to the frame, longitudinal rods passing through said perforations and forming with the upper edges of the slats a screen surface, and longitudinal bars located at opposite sides of the frame and adjustably secured to the same and provided at their upper edges with notches receiving the lower edges of the slats, whereby the latter are rigidly retained at the desired inclination, substantially as described.

2. A screen comprising a frame, the adj ust- 5 able transverse slats hingedly connected with the frame and arranged at an inclination,

longitudinal rods passing through perforations of the slats and forming with the latter a screen surface, the perforations of the 10 slats being of a sufficient size to permit the adjustment of the latter, and means for securing the slats at the desired inclination, substantially as described.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in I 5 the presence of two witnesses.

JACOB ENGEL.

\Vitnesses:

CHARLES NICKEL, L. L. SILLIMAN. 

